Cost Effective Energy Efficient Improvements for Minnesota's Public Ice Arenas: Overview of 20 Options
http://www.mncee.org/pdf/tech_pubs/ice_fact.pdfPub date is 1998. The contact at the Minnesota Center for Energy and Environment is Russ Landry (rlandry@mncee.org or phone: 612-335-5863 according to their web site).

Fixed and Floating Head Pressure Comparison for Madison Ice Arena
http://www.ecw.org/prod/174-2.pdfThis paper reports on a study that investigated the energy and cost savings resulting from changing the control strategy for the condenser fan. The study was conducted on the refrigeration system at the Madison Ice Arena.

Allowing for the Unexpected
http://www.ecw.org/prod/e2/spri99.pdfCommentary tells how unexpected results from an ECW-sponsored research project led to dramatic savings at a local ice arena.

Investigation of the Field Performance for Industrial Refrigeration Systems
http://www.ecw.org/productdetail.php?productid=50This UW-Madison graduate student thesis explores ways to improve efficiency of industrial refrigeration, such as through controls, system configurations, and monitoring equipment. You may order a copy of this thesis from the UW-Madison: http://proton.wils.wisc.edu/lend/.